.browser-image {
	background: url(browser@2x.png);
	background-size: 100%;
}
.throbber div, .throbber span {
	background: url(throbber@2x.gif);
	background-size: cover;
}
h1 {
	background-color: red;
	background: url('logo@2x.png') no-repeat top center;
	background-size: 183px 70px;
}
